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24-09-2022
Chemistry

Answered

A student investigated the concentration of a solution of sodium hydroxide by titration with a 0.0480 mol/dm3 ethanedioic acid solution.
This is the method used.

1. Measure 25.0cm3 of the sodium hydroxide solution into a conical flask using a 25.0cm3 pipette

2. Add 2 drops of indicator to the sodium hydroxide solution

3. Fill a burette with the 0.0480 mol/dm3 ethanedioic acid solution to the 0.00cm3 mark

4. Add the ethanedioic acid solution to the sodium hydroxide solution until the indicator changes colour

5. Read the burette to find the volume of the ethanedioic acid solution used

Suggest two improvements to the method that would increase the accuracy of the result.

A student investigated the concentration of a solution of sodium hydroxide by titration with a 00480 moldm3 ethanedioic acid solution This is the method used 1 class=

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